Folders B.18.1-B.18.4: Valence, 1947-1964. Oxford University Press (first published 1952).

Folder B.18.1: Outline notes for chapters, correspondence, notes on the literature.

Folder B.18.2: Correspondence with publishers and colleagues, notes for later editions and for translations, press-cuttings, working notes.

Folder B.18.3: Drawings for book.

Folder B.18.4: Correspondence with publishers especially regarding foreign editions, and with colleagues regarding possible amendments and new calculations for later editions.

Folders B.18.5-B.18.6: 'Carbon-carbon bonds, being a study of bonds of fractional order', 1945. Thesis submitted for the D.Sc. degree, University of St. Andrews, 1945.

Folder B.18.5: MS. of thesis, chapters 1-24.

Folder B.18.6: Typescript and drawings, chapters 1-24 (with note by Mrs. Coulson 'typed by Coulson himself').